Phillips Service Industries, Inc. (PSI) is a privately-held company headquartered in Livonia, Michigan. Established in 1967, PSI oversees a diverse collection of technology-based companies that serve a wide variety of industries, from automotive, aerospace and defense, to energy, security, medical and semiconductor. Our award-winning products and services help reduce costs and maximize efficiency for many Fortune 1000 companies, as well as the U.S. military. PSI pushes the bounds of technology on critical programs like Homeland Security, Defense research and space exploration. Simply put: PSI is one of the most innovative and unique manufacturing and service companies in the world.